Plumbing & Pipe Repair DiagnosticsWhen should plumber's putty be avoided, and neutral-cure silicone used instead?83%Next Correct IncorrectOn porous natural stone countertops (granite, marble). The oils in plumber's putty can leach into the porous stone, causing dark staining.When should plumber's putty be avoided, and neutral-cure silicone used instead?On cast iron bathtub wastesInside copper shower drain flangesOn porous natural stone surfaces like granite or marble, where oil in putty can stainUnderneath stainless steel kitchen sinks83%Back To Top
